MultipleShearSpring ElementΒΆ

This command is used to construct a multipleShearSpring (MSS) element object, which is defined by two nodes. This element consists of a series of identical shear springs arranged radially to represent the isotropic behavior in the local y-z plane.

element('multipleShearSpring', eleTag, *eleNodes, nSpring, '-mat', matTag, <'-lim', lim>, <'-orient', <x1, x2, x3>, yp1, yp2, yp3>, <'-mass', mass>)
eleTag (int) unique element object tag
eleNodes (list (int)) a list of two element nodes
nSpring (int) number of springs
matTag (int) tag associated with previously-defined UniaxialMaterial object
lim (float) minimum deformation to calculate equivalent coefficient (see note 1)
x1 x2 x3 (float) vector components in global coordinates defining local x-axis
yp1 yp2 yp3 (float) vector components in global coordinates defining vector yp which lies in the local x-y plane for the element
mass (float) element mass


If dsp is positive and the shear deformation of MSS exceeds dsp, this element calculates equivalent coefficient to adjust force and stiffness of MSS. The adjusted MSS force and stiffness reproduce the behavior of the previously defined uniaxial material under monotonic loading in every direction. If dsp is zero, the element does not calculate the equivalent coefficient.

See also